Henry crompton ashlin



(No Model.

H. '0 ASHLIN. CONSTRUCTION OF VESSELS.

No. 561,472. Patented June 2, 1896.

Mirna STATES HENRY OROMPTON ASHLIN, OF LONDON, ENGLAND.

CONSTRUCTION OF VESSELS.

SPECIFICATION forming part of Letters Patent No. 561 A72, dated June 2,1896. Application filed 311116 5, 1893. Serial No. 476,665. (No model.)Patented in England May 7,1891,I T0. 7,91%

To aZZ whom it may concern.-

Be it known that I, HENRY CROMPTON ASH- LIN,21, subject of the Queen ofEngland, residing at London, England, have invented certain new anduseful Improvements in the Construction of Vessels, (for which I have obtained Letters Patent in Great Britain, No. 7,914, dated May 7, 1891,)of which the following is a specification.

This invention relates to the construction of vessels, the object beingtoobtain the necessary freedom from rolling in the absence of theordinary bar-keel without the use of bilgekeels, which are found to bean obstruction to speed and in other Ways objectionable; and myinvention consists in the novel construction, arrangement, andcombination of parts, as hereinafter fully described, illustrated in thedrawing, and pointed out in the appended claim.

The said drawing is a part transverse section of the lowerpart of avessel constructed according to my invention, the line y a representingthe center line of the vessel.

I11 carrying out my invention I construct the vessel with a keel-platethat is without an ordinary keel, and upon such portion of the hull asmay be desired I form any required number of longitudinal or fore andaft steps, which may act as keels. Thus for a distance of say one or twoplates from the center line of the vessel the bottom would be flat andthen would come an abrupt step of a few inches, then another flat, andthen another step, and so on, for such distance as may be necessary ordesirable.

The invention is particularly suitable for a ship having a cellular ordouble bottom.

In order that my invention may be more clearly understood, I willdescribe the same in detail, referring to the accompanying drawmg.

The steps in the same vessel may be of similar or dissimilar dimensions.It will be seen from the drawing that each of the steps is formed with adouble angle-iron or Z-bar O, to the two horizontal flanges of which areriveted the two succeeding plates A D, or l) D, or D D and to thevertical portion of which is riveted the appropriate vertical plate E.The double angle-iron need not be all in one piece, but might consist oftwo single angleirons. ends to take the shape of the bow and stern ofthe vessel.

It is to be understood that the number, size, and arrangement of thebefore described steps may be varied to suit requirements, and Withoutdeparting from the spirit of the invention.

WVhat I claim is In a vessel, the combination With horizontally-arranged plates arranged upon each side of the central line of thevessel and running longitudinally of the latter, of Z-shaped bars ordouble angle-irons having their horizontal portions secured to theadjacent edges of the said horizontal plates and vertical plates securedat their lower edges to the vertical portions of said Z-shaped bars ordouble angleirons, as and for the purpose specified.

In testimony whereof I have hereto set my hand in the presence of thetwo subscribing Witnesses.

HENRY OROMPTON ASHLIN.

\Vitnesses:

FRANCIS I'I. KENDALL, FREDK. STRIPLING.

The steps may be worked off at the-

